IsProperSupersetOf Method

HashSet(Of T).IsProperSupersetOf Method

Determines whether a HashSet(Of T) object is a proper superset of the specified collection.

Namespace:  System.Collections.Generic
Assembly:  System.Core (in System.Core.dll)

Public Function IsProperSupersetOf ( _
	other As IEnumerable(Of T) _
) As Boolean


Type: System.Collections.Generic.IEnumerable(Of T)
The collection to compare to the current HashSet(Of T) object.

Return Value

Type: System.Boolean
true if the HashSet(Of T) object is a proper superset of other; otherwise, false.


ISet(Of T).IsProperSupersetOf(IEnumerable(Of T))


other is Nothing.

An empty set is a proper superset of any other collection. Therefore, this method returns true if the collection represented by the other parameter is empty unless the current HashSet(Of T) collection is also empty.

This method always returns false if Count is less than or equal to the number of elements in other.

If the collection represented by other is a HashSet(Of T) collection with the same equality comparer as the current HashSet(Of T) object, this method is an O(n) operation. Otherwise, this method is an O(n + m) operation, where n is the number of elements in other and m is Count.


Supported in: 5, 4

For a list of the operating systems and browsers that are supported by Silverlight, see Supported Operating Systems and Browsers.

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